HIDAYAH, Nurul; ASMARANI, Dewi; MARYONO. Development of HOTS-Based Student Worksheets on Trigonometry material in Improving Problem Solving Ability. Journal of Education and Learning Mathematics Research (JELMaR), [S. l.], v. 4, n. 1, p. 70–78, 2026. DOI: 10.37303/jelmar.v4i1.141. Disponível em: https://jelmar.wisnuwardhana.ac.id/index.php/jelmar/article/view/141. Acesso em: 25 aug. 2026.